CN109519945B

CN109519945B - Self-cooling modularized combustion device

Info

Publication number: CN109519945B
Application number: CN201811633383.0A
Authority: CN
Inventors: 刘继思; 冯云; 尹伟宁
Original assignee: Wisdom Energy Technology Co Ltd
Current assignee: Wisdom Energy Technology Co Ltd
Priority date: 2018-12-29
Filing date: 2018-12-29
Publication date: 2024-06-25
Anticipated expiration: 2038-12-29
Also published as: CN109519945A

Abstract

The invention provides a self-cooling modularized combustion device which comprises a protective cover and a combustion system, wherein the combustion system comprises a plurality of venturi combustors, each venturi combustor is provided with an air inlet part for injecting air and an outlet part for outputting mixed gas, each venturi combustor comprises a nozzle and a first mixing pipe, the nozzles are arranged on the air inlet part, a flame cavity for surrounding flame is formed on the inner side of the protective cover, the venturi combustors further comprise a second mixing pipe, the second mixing pipes form at least one part of the protective cover, the first mixing pipes are communicated with the second mixing pipes, a plurality of flame holes are formed on the inner side of the second mixing pipes, and the flame holes form the outlet part.

Description

Self-cooling modularized combustion device

Technical Field

The application relates to the field of torches, in particular to a self-cooling modularized combustion device.

Background

In the petrochemical device, the emptying torch system can timely treat redundant, harmful and unbalanced waste gas discharged from the production device, and can treat unqualified gas generated during test run and start and stop and a large amount of gas instantaneously discharged during accidents, so that the normal and safe operation of the device is ensured.

The emptying torch system generally adopts an injection type combustion device, and the injection type combustion device designed before the inventor comprises a plurality of layers of venturi combustors for combusting fuel gas. Several layers of shields are looped around the venturi burners to form a flame chamber, blocking heat radiation. Through field tests, the problems of noise, flame length and high wall cylinder temperature are found. Accordingly, there is a need for further improvements to existing injection type combustion devices.

Disclosure of Invention

In view of the above, the present invention provides a self-cooling modular burner capable of solving at least one of the problems of noise, flame length and wall tube temperature exceeding.

In one embodiment, the shield is rectangular with upper and lower openings.

In one embodiment, the second mixing pipes are arranged on two opposite side walls of the protective cover, and flame holes on the two opposite side walls are used for spraying flames oppositely.

In an embodiment, either side of the two opposite side walls is formed by a plurality of layers of the second mixing pipes stacked in the vertical direction, each layer is formed by connecting two second mixing pipes side by side, and the venturi burners on the two opposite side walls supply air simultaneously or shut off the air simultaneously.

In one embodiment, a plurality of the second mixing pipes are arranged on all four side walls of the protective cover, wherein flame holes on two opposite side walls are used for spraying flames oppositely, and flame holes on the other two opposite side walls are used for spraying flames oppositely.

In an embodiment, any one side of the four side walls is formed by a plurality of layers of the second mixing pipes stacked in the vertical direction, each layer is formed by connecting two second mixing pipes side by side, the venturi burners on two opposite side walls of the four side walls supply air simultaneously or cut off air simultaneously, and the venturi burners on the other two opposite side walls of the four side walls supply air simultaneously or cut off air simultaneously.

In one embodiment, the first mixing tube is connected to an outer intermediate position of the second mixing tube and extends along the second mixing tube in a curved manner toward the corner side of the shield.

In an embodiment, the first mixing tube is connected to an end of the second mixing tube on a side facing the corner of the shield.

In one embodiment, the flame holes are long kidney shaped holes.

In an embodiment, the flame hole is a round hole, and a round tube is installed in the round hole and protrudes out of the inner wall surface of the second mixing tube.

In summary, the present application provides a self-cooled modular combustion apparatus, wherein a second mixing tube portion of a venturi burner is configured as a part of a protection cover, a first mixing tube is connected to the second mixing tube, a mixed gas enters a flame cavity through a flame hole on an inner wall of the second mixing tube for combustion, and an air inlet portion of injection air of the burner is located outside the protection cover. The design enables the combustion device to jet air in a larger range, on one hand, the number of the burners can be obviously increased, the defect that the air jet amount of each burner is insufficient is avoided, mixed fuel gas is jetted from a plurality of flame holes for combustion, flames are uniformly distributed on the inner wall surface of a protective cover formed by the whole second mixing pipe, and combustion flames are relatively shorter; on the other hand, at the periphery of the protective cover, due to the injection effect of the Venturi burner, besides part of peripheral air is injected into the Venturi burner to be involved in combustion, a large amount of peripheral cold air can move to the outer side of the protective cover to dissipate heat of a plurality of second mixing pipes. The mixed gas flows through the inside of the second mixing pipe, so that the heat dissipation effect of the protective cover can be further enhanced. In addition, the number of venturi burners is significantly increased, and the size and power of a single venturi burner can be significantly reduced for treating the same amount of fuel gas, thereby significantly reducing noise and flame length. In addition, the venturi burners positioned on the opposite sides of the protective cover spray oppositely, and a part of flame lengths are mutually offset, so that the flame lengths are effectively reduced.

Drawings

FIG. 1 is a schematic perspective view of an embodiment of a self-cooling modular burner of the present invention.

FIG. 2 is a cross-sectional view of the self-cooled modular combustion apparatus of FIG. 1 taken along a mid-section.

Fig. 3 is a top view of the self-cooling modular combustion apparatus of fig. 1.

FIG. 4 is a schematic illustration of two venturi burner connections of the same tier on one side of FIG. 1.

Fig. 5 is a schematic perspective view of another embodiment of the self-cooling modular burner of the present invention.

FIG. 6 is a cross-sectional view of the self-cooled modular combustion apparatus of FIG. 5 taken along a mid-section.

Fig. 7 is a top view of the self-cooled modular combustion apparatus of fig. 5.

FIG. 8 is a schematic view of two venturi burner connections of the same tier on one side of FIG. 5.

Detailed Description

Before the embodiments are explained in detail, it is to be understood that the application is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the drawings. The application is capable of other embodiments and of being practiced or of being carried out in various ways. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. The use of the terms "comprising," "including," "having," and the like are intended to encompass the items listed thereafter and equivalents thereof as well as additional items. In particular, when "a certain element" is described, the present application is not limited to the number of the element as one, but may include a plurality of the elements.

In addition, the description and claims of the present application are described in terms of the vertical placement (normal use state) of the injection type combustion apparatus, so that a great deal of directional terms in the vertical direction and the horizontal direction are described herein with reference to the vertical placement state thereof. It will be appreciated that the injection burner of the present application may be placed upside down (e.g., during transportation) and that the directional terms should be rotated 90 degrees for understanding.

As shown in fig. 1-4, the present application provides a self-cooling modular combustion apparatus 10, the self-cooling modular combustion apparatus 10 including a hood 12, a combustion system, and a gas treatment unit 14. An outer frame 16 is fixedly connected to the outside of the shield 12. In one embodiment, the housing 16 may be a skid housing to facilitate low cost shipping and securing of the self-cooling modular burner 10. The combustion system comprises a number of venturi burners 18 to burn the gas to be combusted. The gas treatment unit 14 comprises a control unit and various valves and pipes for treating the gas to be treated, such as removing the liquid, etc., and delivering the treated gas to a combustion system for combustion. In the illustrated embodiment, a control unit is disposed within the skid housing 16 at the bottom of the self-cooling modular burner 10, and a plurality of venturi burners 18 are connected to the gas treatment unit 14 by gas supply lines to receive the gas to be treated.

The inner side of the shield 12 forms a flame chamber 20 for enclosing a flame. In this embodiment, the protection cover 12 has a rectangular shape, and the protection cover 12 has an upper opening and a lower opening in the vertical direction. Each venturi burner 18 has an inlet portion 22 for injecting air and an outlet portion 24 for outputting a mixed gas, and each venturi burner 18 includes a nozzle 26, a first mixing tube 28, and a second mixing tube 30, the second mixing tube 30 being, for example, a square tube. The nozzle 26 is disposed at the air inlet 22, the first mixing tube 28 is in communication with the second mixing tube 30, and the first mixing tube 28 is connected to the outside of the second mixing tube 30, such that the air inlet 22 is located outside the hood 12. The second mixing pipes 30 form at least a part of the protective cover 12, the inner side surfaces of the second mixing pipes 30 facing the flame cavities 20 are provided with flame holes 32, and the flame holes 32 form outlet portions 24 for outputting mixed gas.

In other words, the second mixing tube 30 is not only part of the shroud 12, but is also a two-stage mixing carrier for the venturi burner 18. The design combines the diffusion mixing section of the original Venturi burner 18 with the cavity of the second mixing tube 30, reduces the arrangement space requirement, can enlarge the size of the protective cover, enlarges the flame zone, reduces the heat capacity intensity in the flame zone, and can effectively reduce the flame length and combustion noise.

It should be noted that, in this embodiment, the design of the protection cover 12 into a rectangular shape is only one implementation of the present invention, and in other embodiments, the protection cover 12 may be designed into other shapes according to actual design needs, which is not limited by the present invention.

As shown in fig. 1, a plurality of second mixing tubes 30 are provided on all four sidewalls of the shield 12. More specifically, each of the four side walls is formed by stacking a plurality of second mixing pipes 30 in the vertical direction, and the number of stacks of the second mixing pipes 30 per side wall is the same. Each layer of any side wall is formed by connecting two second mixing pipes 30 side by side, and the connecting ends of the two second mixing pipes 30 are closed. This arrangement allows the number of venturi burners 18 to be significantly increased, and for the same amount of fuel gas to be treated, the size and power of the individual venturi burners 18 can be significantly reduced, thereby significantly reducing noise and flame length.

Of the four side walls of the shield 12, the flame holes 32 on two opposing side walls are opposed to the jet flames, and the flame holes 32 on the other two opposing side walls are opposed to the jet flames. For example, all the second mixing pipes 30 on the two opposite side walls are arranged oppositely, so that the positions of the flame holes 32 on the second mixing pipes 30 on the two opposite side walls correspond respectively, and when the two opposite side walls are burnt, the flame holes 32 on the two opposite side walls form opposite spraying. The flames counteract each other in opposite spraying, so that the flame is prevented from elongating to contact the opposite wall surfaces, and the temperature of the wall cylinder exceeds the standard, and changes color.

The nozzle 26 injects the fuel gas and injects the air into the first mixing tube 28 for mixing, and then into the second mixing tube 30 for mixing again, so that the air and the fuel gas are fully mixed, and then the mixed gas enters the flame cavity 20 from the flame holes 32 for combustion. The design enables the self-cooling modularized combustion device 10 to inject air in a larger range, on one hand, the number of the burners can be obviously increased, the air injection quantity of each burner is not insufficient, mixed fuel gas is injected from a plurality of flame holes 32 for combustion, flames are uniformly distributed on the inner wall surface of a protective cover formed by the whole second mixing pipe 30, and the combustion flames are relatively shorter; on the other hand, at the periphery of the protecting cover 12, due to the injection action of the venturi burner 18, besides a part of peripheral air is injected into the venturi burner 18 to be involved in combustion, a large amount of peripheral cold air can move to the outer side of the protecting cover 12, namely the outer sides of the plurality of second mixing pipes 30, so as to dissipate heat of the plurality of second mixing pipes 30. The mixed gas flows through the inside of the second mixing pipe 30, so that the heat dissipation effect of the shield 12 itself can be further enhanced.

In the illustrated embodiment, the combustion system includes a plurality of individually mountable burner assemblies. Because the venturi burners 18 are more in number, the combustion system is modularized, so that the installation efficiency can be improved to a great extent, the assembly is convenient, and the disassembly, the maintenance and the replacement are convenient when the venturi burners 18 or the protective cover 12 are in failure.

In the present application, the self-cooling modular combustion apparatus 10 further includes two discharge nozzles 34, in the illustrated embodiment, two discharge nozzles 34 are connected to the gas treatment unit 14 for resolving temporary venting by the discharge nozzles 34 when gas flow exceeds standard. Because the flames at the top of the shield 12 are large, the shield 12 further includes a top shield unit 36, such as a metal plate, disposed at the upper portion of the second mixing tube 30, at the top in order to shield the flames. Two discharge tubes 34 are disposed at two adjacent angular positions within the housing 16, respectively, with the outlet ends of the discharge tubes 34 disposed through the top shield unit 36 such that the outlet ends of the discharge tubes 34 are disposed within the flame chamber 20.

In the embodiment shown in fig. 1 to 4, the first mixing tube 28 is a bent tube, one end of which is connected to the outer middle of the second mixing tube 30 so as to communicate with the inside thereof, and the other end of which extends along the side of the second mixing tube 30 toward the corner of the shield 12, i.e., the junction between two adjacent second mixing tubes 30. And the first mixing tubes 28 on the same side are aligned in position in the vertical direction.

As shown in fig. 3, in order to avoid the spout 34, two adjacent second mixing pipes 30 at two adjacent included angle positions in the outer frame 16 are respectively connected by an inclined plate 38, and the spout 34 is disposed outside the inclined plate 38. Thus, in this embodiment, the shroud 12 includes four side walls of the second mixing tubes 30, two inclined plates 38, and a top shroud unit 36.

In the embodiment shown in fig. 5-8, the first mixing tube 28 is a straight tube that is connected to the end of the second mixing tube 30 that is oriented toward the corner of the shield 12. And the first mixing tubes 28 on the same side are aligned in position in the vertical direction.

In this embodiment, since the first mixing tube 28 is connected to the end of the second mixing tube 30, so that two adjacent second mixing tubes 30 cannot be directly connected to each other, two adjacent second mixing tubes 30 between four sidewalls are connected to each other by the connecting plate 40, for example, the connecting plate 40 may be configured as a rectangular plate, i.e., two side plates of the rectangular plate are respectively flush with the inner walls of the corresponding second mixing tubes 30. In order to avoid the spout 34, two adjacent second mixing pipes 30 at two adjacent included angle positions in the outer frame 16 are respectively connected by a sloping plate 42, and the spout 34 is arranged outside the sloping plate 42. Thus, in this embodiment, the shroud 12 includes four side walls of the second mixing tubes 30, two connecting plates 40, two inclined plates 42, and a top shroud unit 36.

In the illustrated embodiment, the bottom of the shield 12 is provided with a plurality of igniters 44, e.g., two igniters 44 are provided on each of the four sidewalls of the shield.

The plurality of venturi burners 18 are connected to the gas treatment unit 14 by a gas supply line 46 to receive the gas to be treated. Specifically, the air supply line 46 has the same structure on the four sides of the hood 12, one of which will now be described as an example. The gas supply line 46 includes a gas supply line 48 and a distribution pipe 50, the gas supply line 48 communicating with one output of the gas treatment unit 14 for receiving the gas to be combusted. The distribution pipes 50 have two branches, and each distribution pipe 50 communicates with the gas delivery pipe 48 and also communicates with a portion of the venturi burner 18, i.e., with the nozzle 26, to distribute the fuel gas to the venturi burner 18. In the illustrated embodiment, two distribution pipes 50 are each horizontally disposed in a section connected to gas delivery pipe 48 and then each extend upwardly to supply air to the corresponding side vertical row of venturi burners 18. For uniform distribution, the ends of the two distribution pipes 50 are connected to each other by a connection pipe 52 so that the fuel gas can be redistributed in the two distribution pipes 50.

In one embodiment, the gas supply lines 46 on opposite sides of the shield are in output communication with the same line of the gas treatment unit 14. That is, the air supply to the opposed side opposed venturi burners 18 is turned on or off simultaneously.

It should be appreciated that in the above embodiment, the plurality of second mixing tubes 30 are distributed on four sidewalls of the shield 12. In other embodiments, according to the actual gas throughput and the working condition requirements, the second mixing pipes 30 may be distributed only on two opposite sidewalls of the protection cover 12, and achieve flame spraying and simultaneous gas supply or gas supply cutting.

In the above-described embodiment, the flame holes 32 are each provided as a long-waist-shaped hole. In other embodiments, the flame holes 32 may be provided in other types, for example, the flame holes 32 may be provided as circular holes, circular tubes may be installed in the circular holes, and the circular tubes may protrude from the inner wall surface of the second mixing tube 30. This arrangement can keep the flame away from the inner wall surface of the second mixing pipe 30, and prevent damage to the inner wall surface.

The concepts described herein may be embodied in other forms without departing from the spirit or characteristics thereof. The particular embodiments disclosed are illustrative and not restrictive. The scope of the invention is, therefore, indicated by the appended claims rather than by the foregoing description. Any changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims

1. The utility model provides a self-cooled modularization burner, includes protection casing and combustion system, combustion system includes a plurality of venturi combustors, and each venturi combustor has the portion of admitting air and exporting the export portion of mixed gas of injection air, venturi combustor includes nozzle and first hybrid tube, the nozzle set up in the portion of admitting air, the inboard of protection casing forms a flame chamber that is used for surrounding the flame, its characterized in that, venturi combustor still includes the second hybrid tube, a plurality of the second hybrid tube constitutes at least a portion of protection casing, first hybrid tube with second hybrid tube intercommunication, a plurality of flame holes have been seted up to the inboard of second hybrid tube, a plurality of the flame hole forms the export portion.

2. The self-cooling modular burner of claim 1, wherein the shield is rectangular with upper and lower openings.

3. The self-cooling modular burner apparatus of claim 2, wherein a plurality of the second mixing tubes are disposed on opposite side walls of the shield, the flame holes on the opposite side walls being opposed to jet flames.

4.A self-cooling modular burner apparatus as in claim 3 wherein either side of said two opposing sidewalls is formed by vertically stacked layers of said second mixing tubes, each layer being formed by two of said second mixing tubes connected side by side, said venturi burners on said two opposing sidewalls being simultaneously supplied with air or simultaneously shut off.

5. The self-cooling modular burner apparatus of claim 2, wherein a plurality of the second mixing tubes are disposed on all four side walls of the shield, wherein the flame holes on two opposing side walls are opposed to the jet of flame and the flame holes on the other two opposing side walls are opposed to the jet of flame.

6. The self-cooling modular burner apparatus of claim 5, wherein any one side of the four side walls is formed by a plurality of layers of the second mixing tubes stacked in a vertical direction, each layer is formed by two of the second mixing tubes connected side by side, venturi burners on two opposite side walls of the four side walls are simultaneously supplied with air or are simultaneously shut off, and venturi burners on the other two opposite side walls of the four side walls are simultaneously supplied with air or are simultaneously shut off.

7. The self-cooling modular burner apparatus of claim 4 or 6, wherein the first mixing tube is connected to an outboard intermediate location of the second mixing tube and extends along the second mixing tube in a curved manner toward a corner side of the shield.

8. The self-cooling modular burner apparatus of claim 4 or 6, wherein the first mixing tube is connected to an end of the second mixing tube on a side of the corner facing the shield.

9. The self-cooling modular burner of claim 1, wherein the flame holes are long kidney holes.

10. The self-cooling modular burner of claim 1, wherein the flame holes are circular holes, and circular tubes are mounted in the circular holes and protrude from the inner wall surface of the second mixing tube.